high-tension
From Longman Dictionary of Contemporary Englishhigh-tensionˌhigh-ˈtension adjective → high-tension wires/cables etcExamples from the Corpushigh-tension• Take the walk along the Humber Bridge with the wind nagging the high-tension cables.• It is a tough, high-tension job.• The Kinner field almost qualified; it had two sets of high-tension wires on its eastern perimeter.